Know Your Environment. Protect Your Health.

1,2,4-Trichlorobenzene

Southwood Water System

1,2,4-Trichlorobenzene is an industrial solvent that can harm the adrenal glands and may increase the risk of cancer.

 

26

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019ND50ND
2020N/A00N/A
2021ND30ND
2022ND110ND
2023ND30ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 5 ppb

The EWG Health Guideline of 5 ppb for 1,2,4-trichlorobenzene was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against hormone disruption.

EPA Maximum Contaminant
Level (MCL): 70 ppb

The legal limit for 1,2,4-trichlorobenzene, established in 1992, was based on a toxicity study in laboratory animals conducted in 1981. This limit may not fully protect against hormone disruption.

ppb = parts per billion

All test results

Date Lab ID Result
2018-03-14ND
2018-03-14ND
2018-05-04ND
2018-07-19ND
2019-06-26ND
2019-07-12ND
2019-07-12ND
2019-09-05ND
2019-10-15ND
2021-03-124164633ND
2021-03-124166774ND
2021-03-174205286ND
2022-01-264240241ND
2022-01-264240240ND
2022-01-264240242ND
2022-01-274240239ND
2022-02-044240245ND
2022-02-044240244ND
2022-10-114465087ND
2022-10-174370660ND
2022-10-314465043ND
2022-10-314464989ND
2022-11-144382866ND
2023-03-144437411ND
2023-03-144437441ND
2023-09-264532910ND